Device for supporting and positioning rock drilling machines



June 2, 1970 3,515,227

DEVICE FOR SUPPORTING AND POSITIONING ROCK DRILLING MACHINES L. LQKKA Filed March 1, 1968 IN VENTOR. Z 5/ F 1 OA/KA Arr J.

7W7 r-JM United States Patent Office 3,515,227 Patented June 2, 1970 Int. Cl. E21c 11/02 US. Cl. 173-43 3 Claims ABSTRACT OF THE DISCLOSURE Device for supporting and positioning rock drilling machines comprising a mobile frame on which a base for each drilling machine may be swung in the vertical plane about an axis in the cross-wise direction of the frame, which base carries a jib which may be swung in the vertical plane on which the drilling machine may be moved lengthwise, wherein the base consists of a sleeve which may be moved in the longitudinal direction of the frame on which sleeve is supported a post which may be rotated about a vertical axis, at the upper end of which post there is supported an arm which may be swung in the vertical plane, at the outer free end of which arm there is swingably supported a jib.

This invention relates to a device for controlling rock drilling machines, comprising a frame on which a base for each drilling machine may be swung in the vertical plane about an axis in the cross-wise direction of the frame, which base carries a jib which may be swung in the vertical plane on which the drilling machine may be moved length-wise.

From Swedish Pat. No. 149,463 a device of this type is known in which the jibs may be swung only in parallel vertical planes, and in which the movement of the jibs in the cross-wise direction of the device can occur only in parallel and with the help of the ground Wheels of the device. This means that the known device has a very limited application and the movement of the drilling machines sideways is troublesome and time consuming.

The object of this invention is to furnish a device of the type mentioned in the introduction which does not have the disadvantages of the known device and which furthermore can be used for drilling holes parallel to and near up to roofs, walls and floors in tunnels and the like and which in open terrain can drill into the rock under the device itself.

This is achieved according to the invention by the base consisting of a slide which may be moved in the iongitudinal direction of the frame, on which is supported a post which may be rotated about a vertical axis at the upper end of which is supported an arm which may be swung in the vertical plane at the outer free end of which jibs are swingably supported.

With advantage the arm can consist of an outer tube which is swingably pivoted on the post, and an inner tube which is rotatable in the outer tube and to the free end of which is fixed an extension which forms an obtuse angle with the tube and the outer end of which forms a bearing for the jib.

An embodiment of the invention will be described below with reference to the drawing.

FIG. 1 shows a top plan view of a device according to the invention of a mobile type, and also a schematic indication of a pattern of the drill holes.

FIG. 2 shows a side view of the device in FIG. 1 in which only one drilling machine control is shown in two difierent positions.

The device according to the examples shown has a frame which is constructed of two tubes 1 and 5, the ends of which are fitted with shaft journals 2 and 4, which are fixed to two side pieces 3 on each. side. On the tube 5 there are rotatably suspended three (a desired number) sleeves 6 to each of which are fixed at right-angles two tubular beams 7 which are connected at the end to a stopplate 8. Onto each beam 7 there is threaded a sleeve 9 and to each pair of these there is fixed a plate 10 on which there is fixed a vertical shaft 11 on which is sup ported a post 12. The post 12, at its upper end, has a fork-shaped bearing for a shaft 13 about which may be swung a bearing piece 14 for a tubular arm 15 which, through its entire length, receives an arm 16 which may be rotated in the tubular arm 15, :and which at its free end has, at an obtuse angle to arm 16, an extension 18 at the end of which is supported the feeding jib 17 swinga'bly about an axle 19. The other end of the arm 16 has a rotating device 21, 22 for example hydraulic. The drill 20 is fed along the jib 17 with the help of a normal feeding device which does not form any integral part of the protective scope.

Between the two end pieces 3 on each side there may be fitted ground wheels, perhaps fitted with belts. As may be seen from FIG. 1, in which for the sake of clarity only arms 15 are shown without :arms 16 and jibs 17 with the drilling machines, the bases may be moved in the direction of motion of the device independent of one another and arms 15 may be swung in such a way that drill holes 23 as indicated in the squared pattern may be drilled without it being necessary to move the device. As shown in FIG. 2, the bases may also be lifted being swung about shaft 5 and arms 15 can be lifted about shaft 13. Further, arm 16 with extension 18 may be turned in such a way that jib 17 adopts a favourable position for drilling.

All these swinging and turning movements may take place in normal known methods, for example with the help of hydraulic devices, and form no integral part of the scope of protection, and are therefore not described in more detail.

Having described my invention, I claim:

1. Apparatus for supporting and positioning rock drilling machines, comprising a mobile base, an elongated frame mounted on the base for vertical swinging movement relative to the base about a horizontal axis, a support mounted on the vertically swinging frame for longitudinal movement lengthwise of the frame, an upright carried by said support, means mounting said upright for rotation relative to said support about an upright axis, an arm mounted on the upper portion of the upright for vertical swinging movement relative to the upright, and a jib for carrying a rock drill support mounted on an end of 3 4 said arm for vertical swinging movement relative to References Cited said UNITED STATES PATENTS 2. Apparatus as claimed in claim 1, said frame being pivotally supported at its rear end on the rear end of said g l ar 1n base, the forward end of said frame overlylng the forward 5 $020,012 2/1962 Moracco et a1. "n 173 43 X end of said base.

3. Apparatus as claimed in claim 1, said frame com- ERNEST PURSER Primal-y Examiner prising a plurality of elongated parallel members, said support comprising sleeve means encompassing said mem- US, Cl. X,R,

bers and slidable lengthwise along said members. 10 173-52; 248l3 

